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Waheed Yr 13 F1 24/25 > 3.2.4 - Period 3 Enhanced > Flashcards

3.2.4 - Period 3 Enhanced Flashcards

1
Q

What is the formula of the compound formed when sodium reacts with oxygen?

A

Na2O

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2
Q

What is the formula of the compound formed when magnesium reacts with oxygen?

A

MgO

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3
Q

What is the formula of the compound formed when aluminium reacts with oxygen?

A

Al2O3

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4
Q

What is the formula of the compound formed when silicon reacts with oxygen?

A

SiO2

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5
Q

What is the formula of the compound formed when phosphorus reacts with oxygen?

A

P4O10

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6
Q

What is the formula of the two compounds formed when sulfur reacts with oxygen?

A

SO2 and SO3

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7
Q

What is the balanced equation for the reaction when sodium reacts with water?

A

2Na + 2H2O –> 2NaOH + H2

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8
Q

What is the balanced equation for the (very slow) reaction of magnesium with cold water?

A

Mg + 2H2O –> Mg(OH)2 + H2

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9
Q

What is the balanced equation for the reaction of magnesium with steam?

A

Mg + H2O –> MgO + H2

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10
Q

What is the balanced equation for the reaction when sodium oxides reacts with water?

A

Na2O + H2O –> 2NaOH

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11
Q

What is the balanced equation for the reaction when magnesium oxide reacts with water?

A

MgO + H2O –> Mg(OH)2

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12
Q

What is the balanced equation for the reaction when aluminium oxide reacts with water?

A

Al2O3 + H2O –> No reaction

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13
Q

What is the balanced equation for the reaction when silicon dioxide reacts with water?

A

SiO2 + H2O –> No reaction

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14
Q

What is the balanced equation for the reaction when P4O10 reacts with water?

A

P4O10 + 6H2O –> 4H3PO4

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15
Q

What is the balanced equation for the reaction when SO2 reacts with water?

A

SO2 + H2O –> H2SO3

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16
Q

What is the balanced equation for the reaction when SO3 reacts with water?

A

SO3 + H2O –> H2PO4

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17
Q

What is the apprximate pH of a solution formed by the reaction of sodium oxide with water?

A

13-14

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18
Q

What is the approximate pH of a solution formed by a reaction of magesium oxide with water?

A

9-10

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19
Q

What is the approximate pH of a solution formed by a reaction of P4O10 with water?

A

1-2

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20
Q

What is the approximate pH of a solution formed by a reaction of SO2 with water?

A

2-3

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21
Q

What is the approximate pH of a solution formed by a reaction of SO3 with water?

A

0-1

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22
Q

What is the structure and bonding in sodium?

A

Giant metallic lattice

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23
Q

What is the structure and bonding in magnesium?

A

Giant metallic lattice

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24
Q

What is the structure and bonding in aluminium?

A

Giant metallic lattice

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25
Q

What is the structure and bonding in silicon?

A

Giant covalent lattice/Macromolecular

26
Q

What is the structure and bonding in phosphorus?

A

Simple molecular lattice

27
Q

What is the structure and bonding in sulfur?

A

Simple molecular lattice

28
Q

What is the structure and bonding in chlorine?

A

Simple molecular lattice

29
Q

What is the structure and bonding in sodium oxide?

A

Giant ionic lattice

30
Q

What is the structure and bonding in magnesium oxide?

A

Giant ionic lattice

31
Q

What is the structure and bonding in aluminium oxide?

A

Giant ionic lattice

32
Q

What is the structure and bonding in silicon dioxide?

A

Giant covalent lattice/Macromolecular

33
Q

What is the structure and bonding in P4O10?

A

Simple molecular lattice

34
Q

What is the structure and bonding in SO2?

A

Simple molecular lattice

35
Q

What is the structure and bonding in SO3?

A

Simple molecular lattice

36
Q

Which period three oxide(s) is/are are basic?

A

Sodium oxides and magneisum oxide

37
Q

Which period three oxide(s) is/are are acidic?

A

P4O10, SiO2 (slightly), SO2 and SO3

38
Q

Which period three oxide(s) is/are are amphoteric?

39
Q

What is the balanced equation for the reaction when sodium oxide reacts with hydrochloric acid?

A

Na2O + 2HCl –> 2NaCl + 2H2O

40
Q

What is the balanced equation for the reaction when sodium oxide reacts with sulfuric acid?

A

Na2O + H2SO4 –> Na2SO4 + H2O

41
Q

What is the balanced equation for the reaction when magnesium oxide reacts with nitric acid?

A

MgO + 2HNO3 –> Mg(NO3)2 + H2O

42
Q

What is the balanced equation for the reaction when magnesium oxide reacts with phosphoric acid?

A

3MgO + 2H3PO4 –> Mg3(PO4)2 + 3H2O

43
Q

What is the balanced equation for the reaction when aluminium oxide reacts with hydrochloric acid?

A

Al2O3 + 6HCl –> 2AlCl3 + 3H2O

44
Q

What is the balanced equation for the reaction when aluminium oxide reacts with sulfuric acid acid?

A

Al2O3 + 3H2SO4 –> Al2(SO4)3 + 3H2O

45
Q

What is the balanced equation for the reaction when aluminium oxide reacts with sodium hydroxide?

A

Al2O3 + NaOH + 3H2O –> 2NaAl(OH)4

46
Q

What is the balanced equation for the reaction when silicon oxide reacts with hot concentrated sodium hydroxide?

A

SiO2 + 2NaOH –> Na2SiO3 + H2O

47
Q

What is the balanced equation when SO2 reacts with a limiting amount of sodium hydroxide?

A

SO2 + NaOH –> NaHSO3

48
Q

What is the balanced equation when SO2 reacts with an excess of sodium hydroxide?

A

SO2 + 2NaOH –> Na2SO3 + H2O

49
Q

Which period 3 element has the highest melting point?

A

Si/Silicon

50
Q

Explain why magnesium oxide has a higher melting point than sodium oxide

A

Both compounds are giant ionic lattices. MgO contains 2+ ions, Na2O contaisn Na+ ions (both contain O2- ions). Mg2+ ions have a higehr charge than Na+, and also have a smaller ionic radius, so the attraction between Mg2+ ions and O2- ions is stronger than attraction between Na+ ions and O2- ions, so require more energy to overcome

51
Q

Explain why P4O10 has a higher melting point than SO3

A

Both are simple molecular lattices, with induced dipole-dipole forces between molecules. These are stonger in P4O10, since these molecules have more electrons than SO2, so more energy is required to overcome the intermolecular forces

52
Q

What is the shape around the P atom in H3PO4?

A

Tetrahedral

53
Q

What is the shape around the S atom in H2SO4?

A

Tetrahedral

54
Q

What is the shape around the S atom in H2SO3?

A

Trigonal pyramidal

55
Q

What is the shape around the P atom in PO4^3-?

A

Tetrahedral

56
Q

What is the shape around the S atom in SO4^2-?

A

Tetrahedral

57
Q

What is the shape around the S atom in SO3^2-?

A

Trigonal pyramidal

58
Q

What observation will you see when magneisum reacts with water?

A

A white precipitate and bubbles of gas slowly form

59
Q

What observation will you see when sodium reacts with water?

A

An orange flame and rapid formation of gas

60
Q

What pbservation will you see when magnesium reacts with oxygen?

A

A bright white light and a white powder forms

Waheed Yr 13 F1 24/25 (20 decks)

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